In my main function, the user inputs an ID number as a string variable which is then passed to the function above. I have tested multiple ID numbers that are in the txt file, and all of them return fail. So, I am assuming this is an issue of the function never reaching the “found = true” statement, but I cannot figure out why. The txt file just has ID numbers and names in the following format:

123
John Smith
etc.

string lookupEmployee(string idNum)
{
    ifstream file;
    string line, employeeName, fail = "Employee not found. ";
    bool found = false;

    file.open("Employees.txt");

    if (file.fail())
    {
        cout << "File failed to open. " << endl;
        exit(1);
        return "-1";
    }

    while (!file.eof())
    {
        while (getline(file, line))
        {
            if (line == idNum)
            {
                getline(file, employeeName);
                found = true;
                break;
            }
        }
    }

    file.close();

    if (!found)
    {
        return fail;
    }
    else
    {
        return employeeName;
    }
}